water cycle
what is precipition
it is when water falls back to earth as rain snow sleet or hail
what make up a atom
protons electrons and neutrons
what does mass mean
the thing taking up space
what is a runoff
a runoff is when water adds to streams or rivers
electrons move speed of light
true or false
true
what are some features that the turtle ship has
dragon head, spikes on the roof the wall makes it so enemys can't hook the turtle ship
what is ground water
it is when water is stored in the ground
what makes up nucleus
protons and neutrons
true or false
is the London underground the worlds oldest subway system
true
how much water on earth does the ocean contain
97%
what is a molecule
2 atoms combined
what does convection mean
moving of matter because of density changing
what is the main source of the water cycle
THE SUN
what does H2O stand for
2 hydrogens and 1 oxygen
the London train:
the first day how many people lined up to take a ride on the train
30,000